Drying apparatus.



S. S. AIVIDURSKY.

DRYING APPARATUS.

APPLICATION min MAY 4. |918.

Patented Dec. 3, 1918.

2 SHEETS-SHEET l HTTORNEX S. S. AMDURSKY. gf QHYING APPARATUS.

APPLlcArloN man MAY4.1918.

1,286,195. 'Patented Dec. 3, 1918.

2 SHEETS-SHEET 2.

SAMUEL S. .AMDURSKY, OF ROCHESTER, NEW YORK.

DRYING APPARATUS.

Specification of Letters Patent.

Patented Dec. s, 191s.

Application filed May 4, 1918. Serial No. 232,489.

To all whom it may concern:

Be it known that I, SAMUEL S. AMDURSKY, a citizen of the United States of America, and resident of Rochester, in the county of Monroe, in the State of New York, have invented new yand useful Improvements in Drying Apparatus, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to certain improvements in drying apparatus adapted to be used more particularly in shoe factories for drying the soles of shoes and similar articles preparatory to sand papering or similar finishing treatment.

The main object is to permit the application of a uniform degree of heat to a considerable number of articles simultaneously.

In other words I have sought to create a continuous flow of heated air through a relatively wide supporting area for the articles to be dried by placing a hollow heater grid of similar area across and within a suitable housing which is open at the top and bottom so that the atmospheric air enterJ ing the bottom may be heated and by its buoyancy rise and escape through the. top where the articles to be dried are supported.

Another object is to render the drying operation more expeditious and economical than has heretofore been practised.

Other objects ory uses relating to specific parts of the apparatus will be hrought out in the following description.

In the drawings:

Figure -1- is a perspective view of a drying apparatus embodying the various features of my invention.

Fig. -2- is a horizontal sectional view of the same apparatus, a portion of the heater being shown in top plan.

Fi f5- is a transverse vertical View taken on line 3-3 Fig. -1-.

Fig. *4.- is detail sectional view of a portion of the air tube and adjacent portion of the burner therein showing more particularly the inlet for supplying air to support combustion of the fuel.

Fig. -5- is an enlarged horizontal sectional view of the drying apparatus taken in the plane of line 5--5 Fig. 3-.

Fig. -6- is a longitudinal vertical sectional view taken in the plane of 6-6, Fig. --5'-.V

Fig. -7- is an enlarged detailed seetional view of the shutter adjusting means.

As illustrated this apparatus comprises a substantially rectangular housing ladapted to be supported from the floor at the desired height by suitable legs -2- at the four corners thereof.

4This housing is preferably made of sheet metal and is open at the bottom and top to form respectively an inlet and an outlet for the passage of air yertically therethrough, the inlets being controlled by suitable shutters -3- while the outlet is provided with an air pervious or'foraminous cover -4- consisting in this instance of a wire screen of substantially the same area as that of the housing and of sufieient strength to support the articles to be dried thereon.

A suitable heater extends horizontally across the interior of the housing -1- approximately from end to end and from side to side between the bottom and top thereof but preferably nearer the top andcomprises a central heating drum -5-, a pair of air supply drums -6- runninof parallel with and equi-distant from opposite sides of the drum -5w in a plane below said central drum and connected thereto by separate sets of branch pipes -7- which are arranged in equally spaced relation longitudinally of the drums -5- and -6- and are therefore inclined upwardly and inwardly from the drums -6- or downwardly and outwardly from the drums -5- so as to facilitate the flow of the heated products of combustion from the burners, presently described, to the central drum 5-.

A pair of burners -8 extend longitudinally and centrally within the air supply pipes -6- from end to end thereof and are provided with jets or apertures -9- registering with the adjacent outer ends of the respective tubes or pipes -7- to direct the flames from the burners thereinto.

The air supply drums -6-'- inclose their respective burners -8- and are open at their front ends to permit the entrance of air for supporting combustion, the rear endsthereof being closed to cause a more expeditious heating of all of the drums and branch pipes connecting the same.

The front end of the main drum -5 is also closed and its rear end is provided with an outlet or exit leading to the exterior of the housing and communicating with a suitable iiue -5-, said outlet or exit being'controlled by a valve or damper -10-.

The burners -8 extend through the front end of the housing --1- and are4 provided with separate valves -11-1 external thereto said valves being connected by pipes M12 to a common supply pipe ,-13- and are provided with operating handles 1%.

Suitable branch pipes *15; of relatively small size lead from the respective pipes n12- into the front ends of thel air supply pipes -6- along the adjacent ends of the burner pipes -8- Jfor supplying pilot lights for each burner and are provided with separate valves -16 which together with the valves Ml1- control the supply of gasl to the burners, the pilot light also serving to maintain relatively'low degree of heatv in the heater when the main valves -11- are closed, in addition to the function of lighting the gas in the burner when said main valves are opened. y

In order to increase the heating efficiency or the heater it is desirable to lhave the damper -10- in the outlet of the main drum -5- closed when the main gas controlling valves llare closed and to cause the damper to be opened simultaneously with and to substantially the same degree as the opening of either of the fas valves- -llindependently oit' the other gas valve and for this purpose the damper -10- is provided with a crank arm 17- connected by a cable 1S- to both of the operated members -1`4- in such manner that the opening of either of the valves -11- will cause a corresponding opening of the damper 10- against the action `of a rek tracting spring 19- shown in Fig. -2- in which the crank arm is shown by dotted lines.

As illustrated the cable -18- is passed around suitable sheaves -20- on the front and rear walls Aof the housing '-1- and' is connected to the operating memberl of the right hand valve ll- Figa-2- and a branch cable -18- to' the operating member of the left hand valve -12- of the same figure so that when either one of the normally closed valves -llwis opened the portion of the cable conneeted to the other valve will be simply slackened without effecting the operation of its' valve thus'pere mitting either burner to be operated independent of the other or both burners simultaneously. v l

In order that the flow of the atmospheric "air from the bottom Amay be' evenly distributed over the entire surface of the heater when both burners are in operation without excessively ehilliiig the heater pipes ,and also to concentrate the heat prduod by either burner when-operated independently ofthe' ether yturner;u1i'foaghyth roramiaos 'top'of the eorrespiidiug sidey f the dry ing apparatus, I have provided lengthwise partitions or bailie plates -22- dividing the interior of the housing below the heater into a series of in this instance three relatively'narrow vertical passages -22- which are open at the top and bottom to permit the passage of atmospheric air therethrough said passages being registered respectively with the central drum -5- and outer drums -6- as shown more clearly in F ig. -3-.

These `partitions are inverted V shape in cross-section and extend from end to end of the housing, being secured to the end walls thereof, the inner sides being vertical and forming the side walls of the central passage -22- while the outer sides converge upwardly and form the inner walls of the outer passages -22-. y

The shutters -3- are similar to those commonly employed in blinds and control the passages -22-, the several slats of each shutter being hingedly connected to lengthl wise bars -23- which in turn are connected by a cross bar -24* whereby all of the shutters may be operated simultaneously.

A suitable operating member -25- is pivotally connected to the central portion of the cross bar 24.- or central bar 5213*- and extends forwardly through an opening Q6- in the front of the housing -1 and is provided with suitable serrations -27- for engagement with one of the walls of the said opening -26d to hold the shutters iiiv their adjusted position, the object oil said shutters being to control the volume of atmospheric air admitted through their respective passages to the heater and together with the gas controlling valves 1land damper -10- serve to control the temperature oi the air escaping through the foraminous top 4ffor drying purposes.

An' additional partition -8- extends from end to end of the housing between the central portion of the drum -5- and foramincus top, -4- to additional support of the central portion of the top and also to divide the upper portion of the interior of the housing into opposite chambers or passagesiso that when either burner is being used independently of the other the heated air produced thereby will be concentrated through the corresponding side of the perforated top,-4- to enable that side to' be used for drying purposes independent of the other side as desired thereby econoirii'zing in' fuel when a relatively small quantity of articles are to be dried.

In opera-tion assuming that one or both of the burners are in operation and that the valves, dani'perand shutters are adjusted to give the desiredtemperature of air escaping through the foraminous top, the shoes or other articles to be driedare placed upon lthe foraminous top and allowedI to remain lIO until properly dried or seasoned, during which operation the atmospheric air entering through the passage -22- at the bottom of the housing contacts with the entire radiating space of the heater and thereby rises by its own buoyancy through the screen top -4- to dry the articles thereon the temperature of the heated air being controlled by the adjustment of the valves -11-, damper -10- and shutters -3-.

What I claim is:

1. In a drying apparatus of the character described, a housing having a foraminous top, in combination wi-th a series of heater pipes within the housing having a common exit leading to the exterior of said housing, and means for supplying a heating agent to said pipes.

2. In a drying apparatus of the character described, a housing having an air inlet and an air exit, means for varying the quantity of air entering the inlet, a series of spaced heater pipes within the housing having a common exit, and means for supplying a heating agent to said pipes.

3. In a drying apparatus of the character described, a housing having an air inlet in its bottom and a foraminous top, a shutter for varying air inlet, and a heater within the housing between the shutter and foraminous to 1i. In a drying apparatus of the character described, a housing having an air inlet in its bottom and an outlet in its top, a shutter controlling the air inlet, and a heater above the shutter.

5. In a drying apparatus of the character described, the combination of a housing having an air inlet and an outlet, a series of heater pipes within the housing between the inlet and outlet, and means for supplying a heating agent to said pipes.

6. In a drying apparatus of the character described, the combination of a housing having an air inlet and an outlet, a heater within the housing comprising a drum having a series of pipes radiating therefrom, and means for supplying a heating agent to said pipes.

7. In a drying apparatus of the character described, the combination of a housing having an air inlet and an outlet, a heater with-v in the housing comprising a drum having a series of pipes radiating therefrom and a gas burner having jets discharging into said pipes.

8. In a drying apparatus of the character described, the combination of a housing having an air inlet and an outlet, a heater within the housing -comprising a drum having a series of pipes radiating therefrom and a gas burner having jets discharging into said pipes, and an air supply conduit inclosing the gas burner.

9. In a drying apparatus of the character described, the combination of a housing having an air inlet and an outlet, a heater within the housing comprising a drum having a series of pipes radiating therefrom, a gas burner having jets discharging into said pipes, and an air suply pipe connecting corresponding ends of said pipes and inclosing the burner.

10. In a drying apparatus of the character described, the combination of a housing having an air inlet and an outlet, a heater within the housing comprising a drum having a series of radial pipes extending downwardly and outwardly therefrom, and a burner having jets opening` into the outer ends of said pipes.

11. In a drying apparatus of the character described, the combination of a housing having an air inlet and an outlet, a heater within the housing comprising a drum having branch pipes extending outwardly and downwardly from opposite sides thereof, and separate gas burners extending across the outer ends of said branch pipes and provided with ets opening into said outer ends.

12. In a drying apparatus of the character described, the combination of a housing having an air inlet4 and an outlet, a heater within the housing comprising a drum having branch pipes extending outwardly and downwardly from opposite sides thereof, said drinn having an outlet leading to the exterior of the housing, separate gas burners having jets opening into the outer ends of the branch pipes, and connected means for controlling the gas supply and outlet simultaneously.

13. In a drying apparatus of the character described,'the combination of a housing having an air inlet and an outlet, a heater within the housing comprising a drum having branch pipes extending outwardly and downwardly from opposite sides thereof, said drum having an outlet leading to the exterior of the housing, a damper for the outlet, separate valves for the burners, and connections between said valves and damper whereby the opening of either one of the valves will cause the opening of the damper.

In witness whereof I have hereunto set my hand this 26th day of April, 1918.

SAMUEL S. AMDURSKY.

Witnesses:

GEORGE S. DADY, HARRY I. AMDURsKr.

Copies of this patent may be obtained for ve cents each, by addressing the "Commissioner of Patents, Washington, D. C. 

